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The Call Type identifies the nature of the call. Used with the Call id fields this value is useful to trace down complex calls like three-way calls, conferences or transferred calls. Possible values are:
- CALL: Usual call between two persons
- 3-WAY: Usual call (as above) with an added person during the call
- CONFERENCE: Conference call
- TRANSFER: Usual call that is transferred to a third person
The Call id is a number that identifies uniquely the call. It can be used to trace a call if it changes its nature (ie becoming a three-way call) or to group all the participants (ie in a conference room).
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